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I have a new Cervelo R5 VWD, size 56. I am 185cm high, 92kg (winter weight).

From the very begining I feel a lack of head tube stiffness. It really surprised me. Today I rode Pinarello DOGMA and I definatelly had to admit that R5 is a REAL NOODLE.

I really cannot understand how it is possible, that such well rated frame lacks stiffness at HT area. Anybody else having similar experiences? Did anybody rode R5 and Dogma? How did it felt in comparisson?

Thank You.

Last edited by Permon on Wed Mar 27, 2013 9:24 pm, edited 1 time in total.

Perceived "headtube stiffness" is a function of many factors, including stiffness of stem and bar, steertube and also front wheel and most importantly, proper adjustment of all the above. For example, if the headset bearings are not properly compressed and adjusted it might translate into a sloppy handling front end...same with front wheel bearings. Also, if the two bikes you are comparing are not equipped with the same cockpit and wheels, then there is other noise/variables that could account for said "perceived stiffness."

The single most important improvement, IMO, of 2011 and newer R-Series Cervelo frames (compared to pre-2011 models) is the new tapered headtube and steer tube and larger bottom bearing on headset. Tracking and handling of the front end of my 2011 R5 compared to earlier models is night an day.

I have not compared my R5 to a Dogma, but I doubt it would be a "real noodle" in a head to head comparison.

The R5s front end is rattling like 7cm from left to right like a noodle.

What do you mean? What is moving 7 cm? If you mean the bike is staying bolt upright and the bars are flexing up to 7cm from horizontal I'm going to go out on a limb and say that is not happening unless your headtube is broken.

(What do I think the handling problem is? Some combination of frame size, fit, stem length/bar reach and weight distribution.)

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